發送短信 : Exploring the relationship between perceived teacher professional development and teacher effectiveness among Vietnamese secondary shool teachers

  _____    _    _                ___     _____    
 / ____|| | || | ||   ____      / _ \\  |  __ \\  
/ //---`' | || | ||  |    \\   / //\ \\ | |  \ || 
\ \\___   | \\_/ ||  | [] ||  |  ___  ||| |__/ || 
 \_____||  \____//   |  __//  |_||  |_|||_____//  
  `----`    `---`    |_|`-`   `-`   `-`  -----`   
                     `-`